Thank you for your interest. This is a handmade pet bottle cover. It uses a thermal insulation sheet! A horse running lightly ♪ It has a round stopper ♪ A 500ml pet bottle is used for the photo! A 600ml pet bottle will also fit ♪ The pet bottle is for photography purposes only. Size ○ Height: 22cm ○ Width: 12cm (at the widest point) ○ Depth: 6cm ○ Waxed cord used ○ With stopper